I have HDMI audio now working but I am not sure how it all fits together... Is the RealTek stuff actually being used at all when I am using HDMI audio and the NVidia HD audio is completely seperate or are they related? Can I use both the optical out and HDMI out for audio ?? or is it one or the other ?? Finally how can I tweak the output? Ideally I want stereo music to come out as stereo, TV stereo to end up as pro-logic (as it would over SP/DIF) but for HD audio to get passed as multi-channel LPCM. Confused as to where to change any settings (there does not appear to be anywhere...) Speaking of which does anyone know what outputs are supported via the NVidia HDMI controller? Does it output 44.1Khz and 48Khz without playing with it?